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Finding the Fourth Proportional to 790.35, 1,184.85 and 558.51

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Solution

The fourth proportional to 790.35, 1,184.85 and 558.51 is: 837.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    790.35 : 1,184.85 = 558.51 : x
  2. Step 2: Convert to fraction form
    790.35/1,184.85 = 558.51/x
  3. Step 3: Cross multiply
    790.35x = 1,184.85 × 558.51
  4. Step 4: Simplify right side
    790.35x = 661,750.57
  5. Step 5: Solve for x
    x = 661,750.57/790.35
  6. Step 6: Final answer
    x = 837.29

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.